199 results about "Top drive" patented technology

The application provides a downhole hydraulic back-off tool, characterized in that the back-off tool comprises a hydraulic anchor, a hydraulic back-off device and a telescopic compensation mechanism, and the power part is composed of a driving cylinder, a driving pin, an anti-rotation cylinder, a rotating cylinder, a third spring, a central shaft, an inner ratchet mechanism, a driving shaft and an outer ratchet mechanism; the one-way left-rotation part of the hydraulic back-off device comprises the inner ratchet mechanism and a second spring, and the anti-rebound right-rotation part comprises the outer ratchet mechanism and a first spring. The application makes all the torques of the workover operation be transmitted to the fishing tool through the relative movement of the inner ratchet mechanism and the outer ratchet mechanism from the hydraulic back-off device, and the working string does not need to transmit the torque to the downhole through the surface wellhead rotary table or the top drive, the hydraulic anchor is anchored and unanchored through the pressure in the string, and the anchor provides a fulcrum function for the timely cooperation of the power torque output of the hydraulic back-off device; the telescopic compensation mechanism is used for compensating the axial displacement of the back-off tool.

The invention discloses an automatic hard well shut-in method and system integrated with a petroleum drilling machine control system, and relates to the technical field of petroleum drilling machine well control. According to the method, the drilling working condition is monitored in real time, an overflow trigger index is calculated, the overflow risk in a shaft is judged, and a hard well shut-in process is started after an alarm is given; the position of a hook and the position of a drill rod joint are monitored in real time, a winch safety stop index is calculated, whether the operation state of the winch is safe or not is judged, the hook is automatically moved to the optimal stop point, and the winch is braked; top drive and slurry pump linkage control is started, a top drive and slurry pump linkage control coefficient is calculated, whether the static working condition before well control is met or not is judged, and equipment is stopped or a strategy is executed accordingly; monitoring the action of the blowout preventer and the state of the hydraulic system, calculating the consistency index of the action of the blowout preventer, judging whether the action of the blowout preventer meets the well shut-in requirement or not, and giving a strategy if the action does not meet the well shut-in requirement; real-time judgment of the overflow risk and automatic hard shut-in of the well can be achieved, the safety of the well mouth is guaranteed, and the risk of manual misoperation is reduced.

The invention discloses a disassembly-free top drive drilling device pulley and guide rail system, relates to the field of petroleum drilling engineering, and solves the problems that a top drive drilling device is too long in assembly and disassembly time and too high in safety risk when applied to a telescopic derrick drilling machine. The derrick is divided into an upper derrick section and a lower derrick section; the slide rail comprises an upper slide rail section and a lower slide rail section; the upper-section sliding rail and the lower-section sliding rail are hooked through a hook; an upper-section sliding rail and a lower-section sliding rail are respectively arranged on two sides of the inner sides of the derrick upper section and the derrick lower section; two ends of the pulley are in contact with the upper-section slide rail and the lower-section slide rail; the working surfaces of the upper-section sliding rail and the lower-section sliding rail in contact with the tackle are on the same plane to form a tackle guide channel; the middle of the pulley is connected with a top drive; the top drive is hung below the traveling block and moves up and down along with the traveling block. According to the disassembly-free top drive well drilling device pulley and guide rail system, the assembly and disassembly time is saved, the danger in the assembly and disassembly process is reduced, and the well drilling efficiency and the construction quality are improved.

The utility model provides special auxiliary equipment for mounting a saddle linear rail of a machine tool, which relates to the technical field of machine tool manufacturing and comprises a tool body (1), a base (2), a worktable (4), a rotary table sliding plate (6), a rotary table (7), a stand column (9), a drilling spindle box (14), a tapping spindle box (15) and a spindle box body (16). Each of the drilling spindle box (14) and the tapping spindle box (15) comprises a spindle box body (16), a gear (17), a moving shaft (18) and a cutter (19), and a rotating motor (20) at the top drives the gear (17) to drive the moving shaft (18) and the cutter (19) to rotate; the thread drilling and tapping efficiency is greatly improved, the stress concentration problem generated by machining is effectively eliminated and relieved, and the stability and reliability of a whole machine tool system are improved.

A well rig can include a mast, and multiple guide assemblies distributed along the mast. The guide assemblies are configured to laterally support a tubular string. A method of operating a well rig can include mounting multiple guide assemblies spaced apart along a length of a mast of the well rig, and actuating each of the guide assemblies between open and closed configurations. In the open configuration the guide assembly does not laterally support a tubular string, and in the closed configuration the guide assembly laterally supports the tubular string. Another method can include mounting multiple guide assemblies spaced apart along a length of a mast of a well rig, and displacing a top drive along the mast. The guide assemblies open in succession as the top drive descends along the mast, and the guide assemblies close in succession as the top drive ascends along the mast.

The utility model provides a sheet metal part laser cutting anti -deformation support frock belongs to sheet metal processing technical field, including moving mechanism, including support frame, the universal wheel of fixed connection in support frame bottom, the mounting bracket of fixed connection in support frame inner wall, the top drive air cylinder of adaptive installation in support frame side wall, fixed mechanism, including the mounting plate of fixed connection in mounting bracket side wall, the installation mouth of opening in mounting plate side wall, the clamping seat of fixed connection in mounting plate inner wall, the fixed frame of fixed connection in clamping seat side wall. The utility model discloses through the setting of moving mechanism and fixed mechanism, has realized the adaptive fixing of different size, shape sheet metal part, and moving mechanism adopts universal wheel and top drive air cylinder combination, has guaranteed frock's nimble movement and has ensured the stability when working, and fixed mechanism passes through the cooperation of adjusting assembly and clamping assembly, utilizes the accurate positioning of small -size sheet metal part of top block driven by top drive air cylinder.

The invention discloses a quick tripping drilling machine and a tripping and tripping method thereof. The drilling machine comprises a site multifunctional device which is arranged on the front ground and used for turning a drilling tool into a horizontal state or a vertical state; the power drill rod box is arranged on at least one side of the site multifunctional device and used for conveying drilling tools to the site multifunctional device or receiving the drilling tools from the site multifunctional device. The base is arranged on the ground on the rear side of the site multifunctional device, the base is provided with a power slip used for clamping a drilling tool in the center of a well mouth, an iron roughneck used for screwing on and screwing off at the position of the well mouth and a derrick, a top drive is arranged in the derrick, a power elevator is hung on the lower portion of the top drive, and a pushing manipulator is arranged on the middle rear portion of the derrick. By means of flexible configuration and collaborative operation of the ground site multifunctional device and the power drill rod box, the three-joint unit does not need to be stored on a table top in the tripping operation process, and operation is directly conducted between the drill rod box and a well mouth.

The present application provides a kind of formation threshold WOB and threshold torque determination method and device, belong to drilling engineering technical field, the method includes: obtaining different preset top drive speed under, in the preset WOB interval, the mechanical drilling speed, torque value and drill bit vibration parameters corresponding to different WOB value;For each preset top drive speed: based on the WOB value of the preset top drive speed and the mechanical drilling speed corresponding to the WOB value, determine the initial threshold WOB of the preset top drive speed from the WOB value;Based on the initial threshold WOB of the preset top drive speed, the torque value corresponding to the preset top drive speed is determined as the initial threshold torque of the preset top drive speed;Based on the drill bit vibration parameters corresponding to initial threshold WOB, initial threshold WOB and initial threshold torque are corrected, and formation threshold WOB and formation threshold torque are obtained.The present application has the advantages of simple calculation method, more accurate result, can effectively guide the selection of drill bit and screw rod, improve the mechanical drilling speed, and improve the rock breaking efficiency.

The utility model relates to the field of foundation repair technology, and specifically is a kind of self-adapting deformation foundation treatment device, including bottom plate, mounting plate, T type support block, hydraulic cylinder, main beam, bearing groove and bearing plate, the bottom plate top is equipped with oil cylinder, the bottom plate top is equipped with hydraulic cylinder corresponding the both sides of oil cylinder, the hydraulic cylinder top drive end is connected with concave bracket by pivot, the oil cylinder and hydraulic cylinder top are equipped with main beam;The main beam one side is equipped with concave clamping groove and support plate respectively.According to the subsidence of different ground, by oil cylinder drive support frame upward lifting, again by motor drive T type support block to drive main beam and bearing groove adjustment angle, to close upper ground pile bottom and be lifted up to support it, and hydraulic cylinder drive concave bracket cooperate the rotation of pivot, to the effect of auxiliary support on the both sides of main beam, to improve the quality of repair ground surface, reach the effect of control uneven settlement repair.

This invention relates to the field of drilling operation technology and discloses a stable deep-earth drilling system with strong pressure resistance. The system includes a support frame, a lifting frame slidably connected to the support frame, a top drive assembly mounted on the lifting frame, an intermediate docking assembly located at the bottom of the top drive assembly and connected sequentially, and a drilling assembly fixed to the bottom of the lowest intermediate docking assembly. The intermediate docking assembly includes a ring-shaped main body. This invention facilitates drilling operations and is suitable for drilling operations at different depths. During drilling, coolant is sprayed from the inner ring above the drill bit to quickly cool the drill bit, effectively protecting its safety and improving drilling efficiency and stability. It eliminates the need to remove the drill rod for core sampling, facilitating subsequent drilling operations. After core sampling, coolant flow is facilitated, preventing the core from clogging the backflowing coolant and effectively avoiding drill rod blockage in the borehole, thus improving drilling safety and facilitating drilling and core sampling operations.

Various devices / methods to move a set of slips and control gripping force on a tubular are disclosed. The slips may be part of a mechanically-actuated casing running tool. The slips may be moved into and out of engagement with a tubular member by rotating a portion of the tool. The rotation may be applied from top drive unit. Set down force or other frictional measures on a pipe collar are not required. A series of interconnected gears through a clutch may be used to cause the slips to engage / a tubular member. A force may be applied to stop rotation of a threaded member, such as a power screw female or threaded nut, to facilitate threading action to set or release the slips. The control of torque applied on the top drive unit and the subsequent dis-engagement of the clutch enables active control of gripping force on the tubular member.

The invention provides an automatic cleaning system and method for the inner wall of a drill rod. The automatic cleaning system for the inner wall of the drill rod comprises a cleaning device, a speed control module and a driving module. The cleaning device is arranged in the drill rod; the speed control module is arranged on the top drive and connected with the drive module, and the speed control module is configured to determine the target moving speed of the cleaning device; the driving module is arranged in the driller room and is configured to receive the target moving speed and control the cleaning device to move in the drill rod in the longitudinal direction. The automatic cleaning method for the inner wall of the drill rod can be carried out through the automatic cleaning system for the inner wall of the drill rod and comprises the steps that the top drive lifts the drill rod, and the cleaning device controls the braking force of the speed control module according to the lifting distance of the top drive; the drill rod moves upwards, the cleaning device moves downwards, the cleaning device keeps a certain distance from the drill floor face all the time, and drilling cleaning is achieved. The device has the beneficial effects that it is guaranteed that the cleaning device can move in the drill rod at the optimal speed, and meanwhile the cleaning effect and operation safety are guaranteed.

The utility model discloses a novel top drive gear box which comprises a box body, a box cover is installed at the top end of the box body, and a spraying system comprises a first oil spraying pipe, a second oil spraying pipe, a third oil spraying pipe and a fourth oil spraying pipe. The first oil spraying pipe, the second oil spraying pipe, the third oil spraying pipe and the fourth oil spraying pipe are arranged between the multiple sets of first-level small gears and the multiple sets of second-level large gears, an oil storage pool is arranged at the bottom end of the box body, and two sets of lubricating pumps are connected to the outer surface of the oil storage pool. Therefore, the balance of the reduction gearbox is optimized, the problem that a top drive needs to be additionally provided with a counter weight is solved, and the whole gearbox body is in a shape similar to an oil pouring pot. By means of the design, effective spraying lubrication of the spraying system on the gear is greatly promoted, and it is ensured that the gear can be fully lubricated under the complex working condition.

The application discloses a heat radiator core processing adjustable pressing plate and relates to the technical field of heat radiator core processing. The heat radiator core processing adjustable pressing plate comprises a connecting seat, an adjusting bolt is rotationally connected to the side surface of the connecting seat, a top driving strip plate one and a top driving strip plate two are both assembled on the outer side of the adjusting bolt through threads, and the top driving strip plate one and the top driving strip plate two are slidingly connected with the connecting seat; and the side surface of the top driving strip plate one is assembled with a gear rod. The heat radiator core processing adjustable pressing plate is used for preventing the top driving strip plate from loosening and making the use of the device more stable in the case when the device is used for large-sized flat tubes by rotating the adjusting bolt, moving the top driving strip plate one and the top driving strip plate two away, expanding the gap between the top driving strip plate one and the top driving strip plate two, and cooperating with the gear rod, a supporting plate one, a gear, a hydraulic chamber one, a transmission rod one, a transmission rod two, a torsional spring rod and a supporting plate two.

A well system includes a rig system operable from an oil and gas platform, the rig system including at least one of the group consisting of a top drive, a rotary table, a draw works system, and a circulating system. The well system further includes a blowout preventer (BOP) positioned atop and fluidly coupled to a wellhead installation, the BOP including a longitudinal flow path and at least one radially movable member operable to move radially into the flow path to form a seal therein and to move radially out of the flow path. The well system includes at least one sensor arranged to monitor at least one parameter indicative of a position of the radially movable member and a controller communicably coupled to the at least one sensor and the at least one rig system, the controller operable to disable the at least one rig system in response to determining the at least one radially movable member is at least partially disposed within the longitudinal flow path.

The sealed lubricating head provides a lubricating compartment with no oiler or oil lines. The lubricating compartment is scaled by a top seal and a bottom seal that seals between the inner barrel and the outer barrel. The sealed lubricating head provides a bottom seal that seals the lubricating compartment. A rubber adapter secures the seal while also securing the rubber to the inner barrel.

The application relates to the technical field of tree root piles and discloses a full-casing follow-up tree root pile construction method based on intelligent control, which comprises the following construction steps: 1) a top drive power head vertically drills a casing into a stratum; 2) first hole cleaning; 3) a grouting pipe is lowered, and a filling space is formed between the grouting pipe and the casing; 4) gravel is filled into the filling space; 5) the top drive power head pulls out the casing from a pile hole; 6) a temporary pile casing is placed to supplement the gravel; 7) a hole sealing device is installed at the upper portion of the lumen of the grouting pipe; 8) second hole cleaning; 9) one-time normal-pressure grouting and second-time high-pressure grouting are sequentially carried out in the grouting pipe through a grouting device until the slurry overflows the top of the pile hole; and 10) the hole sealing device is taken out, the slurry is mixed with the gravel to be coagulated to form a tree root pile. The full-casing follow-up tree root pile construction method based on intelligent control has the technical effects of intelligent construction, high construction efficiency and good pile forming quality.

The invention discloses an oil pipe anti-jacking device suitable for top drive drilling and milling, and belongs to the technical field of oil field and oil well downhole operation. According to the technical scheme, the anti-jacking unit is used for preventing an oil pipe from jacking upwards; the rotary pressing unit is used for pressing the anti-jacking unit; the cavity penetrates through the anti-jacking unit and the rotary pressing unit and is used for penetrating through an oil pipe; and the outer cylinder is used for accommodating the anti-jacking unit. The method has the beneficial effects that the operation is simple, the problems that when top drive shallow layer drilling and milling construction is used in a casing pipe, rotary lowering of an oil pipe cannot be achieved, and a pipe column cannot be prevented from jacking upwards are effectively solved, the drilling and milling construction time efficiency is improved, and the risk that blowout is out of control is completely eradicated.

The invention discloses an interpretable anomaly detection method and device for a top drive drilling device, equipment and a medium, which are applied to the field of drilling engineering, and are used for acquiring operation data of a to-be-detected mechanical part in the top drive drilling device, and dividing the operation data into various working condition data sets based on working condition parameters, extracting feature data of each feature parameter from each working condition data set; determining a working condition sensitivity index and a conflict index based on a grey correlation degree coefficient and a correlation coefficient between the characteristic parameters, and optimizing memory matrix input parameters by utilizing sensitivity analysis and correlation analysis; a clustering algorithm is used for screening sample data to construct a spatial memory matrix, and a multivariate state estimation method and a sequential probability ratio test method are combined to carry out anomaly detection on the mechanical part to be detected; furthermore, interpretability analysis of the abnormal parameters is carried out, and the abnormal key parameters are visually revealed. The self-adaptive judgment of the running state of the equipment and the abnormal traceability of each mechanical part in the top drive well drilling device are realized.

The invention relates to the technical field of drilling driving, in particular to a device suitable for vibration reduction and closed-loop control of a drill string and a testing method. The device comprises a main body structure, wherein two ends of the main body structure are respectively connected with a top drive and a drill column; a main body structure comprises a core shaft, a piston assembly, a shell, a top drive, a cavity, a lower cover body, a positioning elastic unit and a buckling type bearing shell, wherein the piston assembly is arranged on the outer side of the middle section of the core shaft; the top end of the core shaft is connected with the shell; the shell is arranged on the outer side of the core shaft; a buckling type load-bearing shell is installed outside the shell, a coil is installed at the top end of the buckling type load-bearing shell, and the bottom end of the mandrel penetrates out of the buckling type load-bearing shell and is connected with a drill column. According to the device and the testing method, signals and energy are transmitted at the same time through the coil, the energy transmitted to the drill column through drill jumping vibration is converted through the piston assembly, and the drilling reliability and safety are improved by testing the device in advance.

This utility model discloses a heat treatment quenching and cooling device, relating to the field of quenching and cooling technology. It includes a fixed plate, with a limiting plate snapped into its inner wall. A base is fixedly installed in the middle section of the inner wall of the limiting plate, and a motor is fixedly installed on the top of the base. A drive gear is fixedly installed on the top drive end of the motor. A rack is meshed with the side wall of the drive gear, and a left adjustment component is meshed with one side end of the rack. A rack is meshed with the side of the drive gear away from rack one, and a right adjustment component is meshed with the side wall of rack two. This utility model uses a motor to drive the drive gear to rotate, thereby causing rack one and rack two to move and extend relative to each other. This adjusts the positions of the connecting posts in the left and right adjustment components, changing the distance between the four connecting posts, thus reasonably adjusting the spacing of the gear discs snapped at the bottom and effectively avoiding heat overlap.

The utility model relates to the technical field of automation equipment, and discloses a multi-point automatic nut feeding and placing device which comprises a bottom plate, a supporting frame is fixedly connected to the top of the bottom plate, two first sliding rods are fixedly connected to the front side of the bottom of the supporting frame, and a lifting piece is slidably connected between the two first sliding rods. And two second sliding rods are fixedly connected to the front side of the lifting piece, a sliding piece is slidably connected between the two second sliding rods, a connecting piece is fixedly connected to the bottom of the front side of the sliding piece, and a material distribution disc is fixedly connected to the top of the connecting piece. The first air cylinder drives the lifting part to move up and down, the second air cylinder drives the sliding part to slide front and back, and the second motor at the top drives the rotating disc to rotate, so that materials discharged by the feeding pipe at the top fall into a hole of the rotating disc, and the rotating disc rotates to drive the nut to the top of the corrugated pipe and then fall off. And the effects of automatically placing the nuts and quantitatively discharging the nuts are achieved.

This invention belongs to the field of drilling equipment technology and discloses a stress-relieving machining method for key structural components of top drives and the key structural components themselves. The method is used to machine key structural components in top drives containing stepped inner grooves or stepped inner holes. The machining method includes the following steps: S1, machining stepped inner holes or stepped inner grooves on the key structural components, whereby the stepped inner holes or stepped inner grooves form shoulders within the key structural components. The shoulders have a first machining surface and a second machining surface connected at a 90° angle, intersecting at an intersection line; S2, machining the first and second machining surfaces to form a rounded transition surface, with both ends of the rounded transition surface receiving a rounded transition with the first and second machining surfaces, respectively. This stress-relieving machining method for key structural components of top drives effectively reduces stress concentration, reduces space occupation, and lowers the possibility that internal structural components cannot be assembled into stepped inner grooves or stepped inner holes.

An automated slide drilling system (ASDS) may be used with a drilling rig system to control slide drilling. The ASDS may autonomously control slide drilling without user input during the slide drilling. The ASDS may further support a transition from rotary drilling to slide drilling to rotary drilling without user input during the transitions. The operations can include receiving a first orientation of a drill string from a top drive; beginning a drilling operation, including one of: a slide drilling or a rotary drilling operation; recording a second orientation of the drill string in response to the drilling operation; and calculating a starting position of a quill associated with the drill string based on the recorded second orientation of the drill string. The ASDS may also support user input and user notifications for various steps to enable manual or semi-manual control of slide drilling by a driller or an operator.

The invention discloses a double-extension-arm lifting type drill floor mechanical arm which comprises a walking device, the top of the walking device is connected with one end of a connecting rod assembly, the other end of the connecting rod assembly is connected with the bottom of a mounting base, the top of the mounting base is connected with a fixed part of a second rotating device, and a rotating part of the second rotating device is hinged to one end of an extension arm. The other end of the extending arm is connected with the fixed end of the first rotating device, the rotating part of the first rotating device is connected with the clamping mechanical arm, the rotating part of the second rotating device is hinged to the cylinder barrel end of the overturning hydraulic cylinder, and the piston end of the overturning hydraulic cylinder is hinged to the extending arm. The drill floor mechanical hand equipment is small in boundary dimension and accurate in control, a pipe column three-joint arranging form of lifting up and lifting down is adopted, a drill floor mechanical hand lifts the lower end of a three-joint, a high-position racking platform pipe arranging mechanical hand or a top drive device supports the upper end of a pipe column, vertical synchronous work is achieved, operation is stable, and the pipe column three-joint arranging efficiency is improved.

The utility model discloses an automatic mold opening type sole production forming structure which comprises a lower bottom plate, linear guide rails are fixedly installed on the two sides of the upper surface of the lower bottom plate, sliding blocks are connected to the two linear guide rails in a sliding mode, fixing plates are fixedly installed on the upper surfaces of the sliding blocks, and a lower mold base is arranged between the upper portions of the two fixing plates. A forming bottom die is fixedly installed on the upper surface of the lower die base, a forming die plate is rotationally connected to one side of the upper surface of the forming bottom die through a rotating shaft, rolling wheels are installed on the outer wall of one side of the forming die plate in a rolling mode, a cylinder body base is fixedly installed on the outer surface of the lower bottom plate and located on the side position of the lower die base, and a die opening air cylinder is fixedly installed on the lower surface of the bottom end of the cylinder body base. According to the forming structure, the mold opening air cylinder and the mold ejecting wedge block are matched for use, so that the automatic ejection mold opening work of the forming mold plate can be completed in the actual production process, the ejection type automatic mold opening use effect is achieved, and the automatic mold opening production effect of the forming structure can be effectively improved.

This invention proposes a top-drive hydraulic power source system, belonging to the field of hydraulic power source technology. It includes a hydraulic oil tank and a T-port quick-connect coupling. The outlet of the hydraulic oil tank is connected sequentially to a suction filter, a gear pump, a throttle valve, a flow meter, and a P-port quick-connect coupling via a first pipe. The gear pump is connected to a motor drive. The motor is electrically connected to a frequency converter. The T-port quick-connect coupling is connected sequentially to a return oil filter and the inlet of the hydraulic oil tank via a pipe. The L-port quick-connect coupling is connected to the inlet of the hydraulic oil tank via a pipe. The hydraulic oil inlet of the top-drive hydraulic actuator is connected to the P-port quick-connect coupling, and the outlet is connected to either the T-port quick-connect coupling or the L-port quick-connect coupling. By controlling the motor with the frequency converter, variable speed operation is achieved, enabling the top-drive equipment to operate at low speeds when the equipment is not under load. This reduces oil leakage, minimizes overheating and gear pump wear, extends service life, and saves energy.

The invention provides a slurry driving device, a wire-line coring method and a drilling tool lowering method.The slurry driving device comprises a wire-line coring straight pipe, a slurry conveying pipe and a well drilling blowout preventer, the bottom end of the wire-line coring straight pipe is used for being fixedly connected and communicated with the top end of a main shaft of a top driving device, and the bottom end of the wire-line coring straight pipe is used for being fixedly connected and communicated with the top end of the main shaft; the slurry conveying pipe is fixedly connected and communicated with the side wall of the rope coring straight pipe; the well drilling blowout preventer is arranged at a well mouth, and a grouting opening capable of being opened or closed is formed in the bottom end of the well drilling blowout preventer. In the fishing process of the coring drilling tool, the drilling blowout preventer is closed to seal the annular gap between the drilling rod and the inner wall of the in-well sleeve, the grouting opening is opened, slurry is injected into the annular gap between the drilling rod on the bottom side of the sealed position of the drilling blowout preventer and the inner wall of the in-well sleeve, and after the slurry reaches the well bottom, the drilling tool is pushed to move upwards through an inner cavity of the drilling rod. In this way, the situation that the steel wire rope is twisted or rotated is reduced, the ascending resistance of the drilling tool is reduced, the ascending speed of the drilling tool is increased, and the drilling efficiency is improved.

1. The name of the design product: permanent magnet synchronous motor for direct top drive. 2. The use of the design product: as a driving source of top drive drilling device. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.